Never do gossiping and bitching about anyone. If you don't like someone better keep it to yourself.

Learn from your colleague/seniors. If you are the smartest person in the room , you are at the wrong place.

First impression matters.If you are a fresher do your first assignment/task as best as you can. First impression that manager makes of you will last for a long time.

Tell your manager upfront. If you are assigned a task/project which you do not like, tell your manager politely about it without any hesitation.

If it is not given in writing it doesn't exist. Any promises made verbally, doesn't exist if it is not officially mailed to you.

Don't share your personal/financial life with your colleagues.

Always stay employable. Keep learning and upgrading skills, and always stay employable that in case if something happens you can get a new job within a week. Also learn skills other than what you are currently working on.

If there is no growth either financially or learning wise , it's better to leave.

Learn to stay no for extra work if you are not done with yours.If you are free , try to help your colleagues, you will earn respect for yourself.

Ask questions, don't assume. Specially if you are a fresher.

Remember your manager is also an employee working in the company same as you.

Stop complaining about your 9–5 job, after all it pays your bills. Do not join scams like Qnet in greed of earning quick cash.

Everyone is replaceable in a MNC.

Maintain work life balance, take out time for your family , gf/bf , friends.

Once you are in notice period, no one cares about you.

Don't run after brand name of the company in the initial years of your career. Look for better learning opportunities.